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-rw-r--r--sys-utils/mount.85
1 files changed, 5 insertions, 0 deletions
diff --git a/sys-utils/mount.8 b/sys-utils/mount.8
index f634b27fd..1702c4688 100644
--- a/sys-utils/mount.8
+++ b/sys-utils/mount.8
@@ -448,6 +448,11 @@ accessed under newdir. The physical location of the files is not changed.
Note that the
.I olddir
has to be a mountpoint.
+
+Note that moving a mount residing under a shared mount is invalid and
+unsupported. Use
+.B findmnt -o TARGET,PROPAGATION /dir
+to see the current propagation flags.
.RE
.B The shared subtrees operations.